Welcome to the Virus Encyclopedia of Panda Security.
It carries out damaging actions on the affected computer.
It does not spread automatically using its own means.
|First detected on:||March 25, 2007|
|Detection updated on:||March 25, 2007|
|Yes, using TruPrevent Technologies
Expiro.B is a virus that spreads to other computers by copying its code to other files or programs.
Expiro.B uses the following propagation or distribution methods:
- Exploiting vulnerabilities with the intervention of the user: exploiting vulnerabilities in file formats or applications. To exploit them successfully it needs the intervention of the user: opening files, viewing malicious web pages, reading emails, etc.
- File infection: it infects different types of files, which are then distributed through any of the usual means: floppy disks, email messages with attachments, Internet download, files transferred via FTP, IRC channels, P2P file sharing networks, etc.
Expiro.B uses the following infection strategies:
- Polymorphic: it encrypts itself in a different way with each infection it carries out. In order to do this, it uses different keys and operations. As a result, the virus has different characteristics in each new infection, which makes it difficult for antivirus pro-grams to detect this virus.